JPH0436590Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is based on a harvester for harvesting pastures that is connected to the side of a towing vehicle, and the crops harvested by the harvester are transferred to the towing vehicle through a discharge chute installed on the harvester. This invention relates to an improvement in a harvest discharge device for a pasture harvester which discharges crops into a wagon connected to the rear for traction.

As shown in Figure 1, a harvester H for harvesting pasture grass is connected and attached to one side of the left and right sides of the body of the tractor T, and the crops harvested by the harvester H are attached to the harvester H. By discharging it into the wagon W which is connected to the rear of the tractor T's body using the discharging chute C,
When harvesting grass, when the body of the tractor T is turned to the right or left, the wagon W is bent to the right or left in a plan view with respect to the tractor T, and the wagon W is turned to the right or left. Since the direction of the chute C of the harvester H with respect to W becomes out of order, it is necessary to adjust the direction (protrusion direction) of the chute C to match the movement of the wagon W, and this operation is troublesome.

Therefore, as stated in Japanese Patent Application Laid-Open No. 58-43714,
The bending rotation of the wagon W in plan view with respect to the tractor T is detected, thereby controlling the turning operation of the discharge chute C provided in the body of the harvester H in plan view, so that the direction of the discharge chute C is always directed toward the tractor T. A means has been proposed in which the light is directed toward the wagon W being towed.

However, with this means, the projecting direction of the discharge chute C in plan view is adjusted to correspond to the left and right displacement of the wagon W accompanying the turning operation of the tractor T.
This is just an automatic control so that the chute C is pointed at the correct direction, and does not take into account the movement of the wagon W toward and away from the harvester H as the tractor T turns. Even if the crop is directed toward W, when the harvested material released from the tip of the chute C falls into the wagon W, it is inconvenient that it falls biased toward the front end of the wagon W. Not only does this occur, but when the tractor T makes a large turn toward the side where the harvester H is connected and the wagon W comes very close to the harvester H, the discharge chute C, which is now oriented toward the wagon W, The harvested material released from the tip of the pipe will now pass over the wagon W, and conversely, the tractor W will pass over the harvester H.
By making a large turn to the side opposite to the side where the harvester H and the wagon W are connected, when the harvester H and the wagon W are far apart, the harvested material released from the tip of the chute C will not reach the wagon W and will not enter the wagon W. There are problems that can cause inconvenience.

The present invention was devised to solve these problems that occur with conventional means, and the projecting direction of the discharge chute is always fixed to the harvester attached to one side of the tractor body. , the tractor is controlled to turn so that it points toward the wagon that is towed and connected to the rear of the tractor body, and the distance at which the harvest is released from the tip of the discharge chute is controlled by the relative distance between the harvester and the wagon as the tractor turns. The purpose of this is to provide a new means to change the value in response to fluctuations in the amount of data.

In the present invention, as a means to achieve this objective, the harvester body that harvests pastures is connected to the side of the towing vehicle, and the harvested material is released toward the wagon that is towed and connected to the rear of the towing vehicle. A harvest discharge device for a harvester is equipped with a discharge chute that is controlled to turn left and right according to a bending angle of the wagon in a plan view with respect to the towing vehicle, at the tip of the discharge chute, A deflector is provided that can be rotated up and down, and the deflector is rotated downward by bending and turning toward the harvester when viewed from above with respect to the towing vehicle of the wagon, and rising by bending and turning to the side opposite to the harvester of the wagon. This invention proposes a harvest discharge device for a grass harvester, which is characterized in that it is controlled to rotate.

Next, embodiments will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings are used for structural members having the same effect.

FIG. 2 is a plan view of the entire harvested product A in which the present invention can be implemented, in which T is a towing vehicle, H is a harvester, C is a discharge chute, D is a deflector,
W indicates a wagon.

The towing vehicle T is a regular four-wheeled tractor,
A coupling frame 10 is attached to the rear surface of the fuselage.

The harvester H is a normal towed type harvester for harvesting grasses, and is connected and supported by a coupling frame 11 that is L-shaped in plan view and connected to a coupling frame 10 attached to the rear of the body of the tractor T. As a result, the cutting mechanism, which is connected to the side of the body of the tractor T and housed in the machine frame 20, is driven and rotated by the rotational power taken out from the PTO shaft of the tractor T to perform harvesting work. It's like this.

The discharge chute C of the harvester H guides and discharges the harvested material in a predetermined direction from a discharge port provided on the upper surface of the machine frame 20 housing the cutting blow-up mechanism section. In addition, the connection part with the discharge port is a rotatable fitting part so that the guide direction can be selected as desired, and can freely rotate in plan view with respect to the machine frame 20. I'm starting to do that. The turning operation is performed by extending and contracting the electric cylinder 22 whose base end is connected to an arm 21 provided on the machine frame 20.
When the rotating arm 24, which is provided on the upper surface to rotate about the rotation fulcrum 23, rotates, the connecting link 25 connected to the rotating end of the rotating arm 24 connects to the peripheral surface of the base end of the discharge chute C. This is done by pushing and pulling the arm 26 provided at the holder, and as a result, the arm 26 is rotated counterclockwise as shown in Fig. 3 to take a position facing backward, and the arm 26 is turned clockwise as shown in Fig. 4. It will be in a position facing left.

The wagon W can be moved left and right with respect to the tractor T by connecting the front end of the traction rod 30 with a hitch pin 31 to a connecting hitch 12 provided on the rear side of the connecting frame 10 at the rear of the body of the tractor T. It is connected for traction so that it can bend and rotate freely.

Next, FIGS. 5 and 6 show that the discharge chute C is controlled to be turned in accordance with the change in the traction rod angle with respect to the traveling direction due to the rotation of the traction rod 30 of the wagon W about the hitch pin 31. The traction rod angle detection device 4 is shown. The detection device 4
An angle detection arm 41 whose base end rotatably fits into the hitch pin 31 and whose rotary end engages with a pin 40 planted on the upper surface of the traction rod 30, and the hitch pin 31 of the detection arm 41. A rotating shaft 43 is pivotally supported by the connecting hitch 12 so that the rotational movement about the center is transmitted by the two parallel links 42 and 42, and the operating shaft 45 is connected via the rotating shaft 43 and the joint 44. The output voltage of the command partial pressure meter 46 changes according to the change in the traction angle of the traction rod 30 detected by the detection arm 41.

Next, FIGS. 7 and 8 show that depending on the change in the traction angle of the traction rod 30 detected by the detection device 4,
A control device 5 for controlling the pivoting operation of the discharge chute C described above is shown. The control device 5 includes a follow-up partial pressure gauge 51 provided in a sensor box 50 provided on the upper surface of the machine frame 20 of the harvester H, and is rotatably supported by the sensor box 50, with an inner end connected to the follow-up partial pressure gauge 51. A detection arm 54 connected to the operating shaft 52 of the pressure gauge 51 via a joint 53, and the detection arm 5
It consists of a connecting pin 55 that connects the outer end of the discharge chute C which is bent into an L-shape to the rotating arm 24 that rotates the discharge chute C described above.

This follow-up partial pressure gauge 51 works with the aforementioned command partial pressure gauge 46 to operate the electric cylinder 22 by a control circuit shown in the block circuit diagram of FIG.
The discharge chute C is rotated in response to changes in the traction angle of the traction rod 30, so that the discharge chute C is always oriented toward the wagon W.

That is, when the traction angle of the traction rod 30 changes, the output voltage of the command voltage divider 46 interlocked with it changes, and as a result, an output voltage is output from the output terminal of the voltage comparator circuit (b). From this output voltage, the logic circuit C determines the operating direction of the electric cylinder 22 and acts on the output circuit D.
The discharge chute C is rotated by operating the drive circuit No. 2.

The turning operation of the discharge chute C due to the operation of the electric cylinder 22 rotates the tracking partial pressure gauge 51 which is linked to the turning operation, and its output voltage changes, thereby causing the output of the output terminal of the voltage comparator circuit B to change. This continues until the voltage becomes zero.

At this time, the voltage comparator circuit A is connected to the tracking voltage divider 51
When the output terminal voltage of the voltage comparator circuit A becomes a voltage outside the voltage setting range set for the voltage comparator circuit A, it acts on the logic circuit C so as to eliminate the output from the logic circuit C to the output circuit D, and as a result, Even if the command partial pressure gauge 46 rotates more than necessary, the discharge chute C, which rotates in sync with it, is controlled so as not to rotate more than necessary.

Next, FIG. 9 is a side view of the control mechanism that controls the elevation of the deflector D, and in the same figure, C
shows the discharge chute provided on the upper surface of the machine frame 20 described above, and the deflector D is connected to the tip of the discharge chute C so as to be able to freely rotate up and down about a support shaft 60, and is attached upwardly by a spring 61. It is biased to rotate. A motor M with a speed reducer is attached to the lower edge of the base end side of the deflector D.
A rope 64 is connected to the winding drum 63 which is rotated by being transmitted to the output shaft 62 of the winding drum 63.
When the rope 64 is drawn in by the winding operation of the winding drum 63 caused by the forward rotation of the motor M, it rotates downward against the bias of the spring 61 as shown in FIG. Also, the motor M
The rope 64 is paid out by the payout operation of the winding drum 63 due to the reverse rotation of the above-mentioned eighth
It is designed to rotate upward as shown in the figure. Further, a worm gear 65 is provided on the output shaft 62 of the motor M, and an operating shaft 69 of a tracking partial pressure gauge 68 is connected to the shaft of a worm wheel 66 that meshes with the worm gear 65 via a shaft joint 67. When the take-up drum 63 operates in the forward and reverse directions, the follow-up partial pressure gauge 68 rotates in conjunction with it, and its output voltage is changed. The motor M thereof is controlled by the control circuit shown in FIG. 14, and the following partial pressure gauge 68 and the command partial pressure gauge 46 jointly control the operation of the deflector D in the same manner as the operation of the discharge chute C described above. I'm starting to do that.

That is, when the traction angle of the traction rod 30 changes and the output voltage of the command voltage divider 46 changes, an output voltage appears at the output terminal of the voltage comparator circuit. Based on this output voltage, the logic circuit determines the rotational direction of the motor M and acts on the output circuit. The output circuit R operates the relay to rotate the motor M. The follow-up voltage divider 68 which is interlocked with it also rotates until the output terminal voltage of the voltage comparator circuit disappears.

At this time, the voltage comparison circuit 68
When the output terminal voltage of the motor M becomes a voltage outside the voltage setting range of the voltage comparator circuit, the logic circuit operates to eliminate the output from the output circuit, and the motor M
rotation is stopped, and even if the command partial pressure gauge 46 rotates more than necessary, the deflector D is prevented from rotating more than necessary.

When the output voltage of the command voltage divider 46 exceeds the traction angle of 0 degrees, an output voltage appears at the output terminal of the voltage comparator circuit. This voltage acts on the logic circuit, causing the motor M to rotate in the reverse direction, and at the same time this output voltage follows. By applying the pole inversion circuit of the partial pressure meter 68, the following partial pressure meter 68
Reverse the connection of motor M and follow-up partial pressure meter 6
Make the rotation directions of 8 the same. In addition, following partial pressure meter 5
The terminal voltages No. 1 and 68 can be changed manually, and when this is changed, voltages appear at the output terminals of the voltage comparison circuits RO and G. This voltage activates logic circuits C and H, each logic circuit acts on output circuits D and I, and relays H and N operate motor M and electric cylinder 22, causing discharge chute C and deflector D to rotate. In conjunction with this, the follow-up voltage dividers 51 and 68 rotate, and stop when the output terminal voltages of voltage comparison circuits RO and G disappear.

The embodiment device configured as described above operates as follows.

As shown in FIG. 2, when the tractor T is traveling straight and the angle of the traction rod 30 that pulls the wagon W is zero with respect to the direction of travel of the tractor T, the discharge chute C is moved straight as shown in FIG. The deflector D is oriented toward the wagon W as shown in FIG.
is the discharge chute C as shown in FIG.
It is in such a position that the harvested material discharged from the tip of the tube reaches a portion of the wagon W near the rear end.

Next, from this state, the tractor T turns to the right, which is the side where the harvester H is connected and installed, and the wagon W
bends to the right and approaches the harvester H, the discharge chute C rotates counterclockwise as shown in Fig. 3, with its barrel tip pointing toward the harvester H, and at the same time, the discharge chute C As shown in FIG. 12, the deflector D provided at the tip of the cylinder rotates downward, and the harvested material blown out from the discharge chute C is sucked into the wagon W approaching the harvester H. It assumes a downward posture with a shortened reach.

Next, as the tractor T turns to the left, the release chute C rotates clockwise as the traction angle of the traction rod 30 of the wagon W changes, resulting in the state shown in FIG. The deflector D provided at the tip of the cylinder rotates upward to the state shown in Fig. 12, and the reach distance is extended so that the harvested material can be blown into the wagon W that is far away.

As explained above, the harvest discharge device in the harvester according to the present invention is capable of discharging the harvest toward the wagon that is towed and connected to the rear of the towing vehicle to the body of the harvester that harvests pasture, which is connected to the side of the towing vehicle. In a harvest discharge device for a harvester, the discharge chute is controlled to turn left and right depending on the bending angle of the wagon in a plan view with respect to the towing vehicle, the distal end of the discharge chute is provided with a deflector that can be rotated up and down, and the deflector is rotated downward by bending and turning toward the harvester in a plan view with respect to the towing vehicle of the wagon, and bending and turning in the opposite direction from the harvester of the wagon. Since the structure is such that the harvester's discharge chute is controlled so that it rotates upwardly, the discharge chute of the harvester is maintained in a position that always points toward the wagon, which is displaced from side to side by the turning operation of the towing vehicle, and air is blown from the discharge chute. The discharge distance (reaching distance) of the harvested material changes in response to changes in the distance between the wagon and the harvester due to the turning operation of the towing vehicle, so the harvested material discharged from the discharge chute is Even if the distance from the tow vehicle changes due to the turning operation of the towing vehicle, it will be possible to accurately load the vehicle into the wagon.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the conventional means, Fig. 2 is a plan view of the entire embodiment of the device of the present invention, Figs. A plan view, FIG. 6 is a side view of the main parts of the above, FIG. 7 is a plan view of the mechanism that controls the turning operation of the discharge chute, FIG. 8 is a side view of the mechanism, and FIG. 9 is the same as the above. Fig. 10 is a side view of the control mechanism for raising and lowering the deflector;
1, 12, and 13 are explanatory diagrams of the same operation, and FIG. 14 is a block circuit diagram of the control device. Explanation of drawing symbols, A...Harvester, C...Discharge chute, D...Deflector, H...Harvester, M...Motor, T...Tow vehicle, W...Wagon, 10, 11...Connection Machine frame, 12... Connecting hitch, 20... Machine frame, 21... Arm, 22... Electric cylinder, 23... Rotating fulcrum, 24... Rotating arm, 25... Interlocking link, 26... Arm ,3
0... Traction rod, 31... Hitachi pin, 4... Detection device, 40... Pin, 41... Detection arm, 42
... Parallel link, 43 ... Rotation axis, 44 ... Joint, 45 ... Operating axis, 46 ... Command partial pressure gauge, 5 ...
...Control device, 50...Sensor box, 51...
Tracking partial pressure gauge, 52... Operating axis, 53... Joint, 5
4...Detection arm, 55...Connecting pin, 60...
Support shaft, 61... Spring, 62... Output shaft, 63...
Winding drum, 64... rope, 65... worm gear, 66... worm foil, 67... joint,
68...Following partial pressure gauge, 69...Operating axis, A, B,
F, T, L... Voltage comparator circuit, C, C... logic circuit, D, R... output circuit, E, N... relay, wo... polar inversion circuit.

Claims (1)

[Scope of utility model registration request] A discharge chute is installed in the body of a harvester connected to the side of the towing vehicle to discharge the harvest toward the wagon connected to the rear of the towing vehicle, and is attached to the body of the harvester connected to the side of the towing vehicle to discharge the harvest toward the wagon connected to the rear of the towing vehicle. In a harvest discharge device for a harvester, which is installed in a controlled manner so as to turn left and right depending on the angle, the tip of the discharge chute includes:
A deflector is provided that can be rotated up and down, and the deflector is rotated downward by bending and turning toward the harvester when viewed from above with respect to the towing vehicle of the wagon, and rising by bending and turning to the side opposite to the harvester of the wagon. A harvest discharge device for a grass harvester, characterized in that the device is controlled to rotate.